In the manufacture of wire rope，if the wires are shaped to conform to the curvature of the finished rope before they are laid up，the rope is called（）.A.compositeB.left-layC.improvedD.preformed

单项选择题

In the manufacture of wire rope，if the wires are shaped to conform to the curvature of the finished rope before they are laid up，the rope is called（）.

A.composite
B.left-lay
C.improved
D.preformed

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